Adding-machine.



No. 836,130. PATENTED NOV 28, 1906. 0. N. McPARLANDQ ADDING MACHINE.

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UNITED STATES PATENT OFFICE.

CHARLES MCFARLAND, OF DETROIT, MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS,TO BURROUGHS ADDING MACHINE COMPANY, OF DE- TROIT, MICHIGAN, ACOR-PORAHON OF MICHIGAN.

ADDING-MACHINE.

Patented Nov. 20, 1906.

Application filed Earth 11, 1904. gerisl 150. 197,850-

To ail whom [it may concern.-

Be it known that I, (Julianne N. Mol na LAND, a citizen of the UnitedStates, residing at Detroit, W'ayne county, Michigan, have inventedcertain new and useful im rovements in Adding-Machines, of Whielrt efollowing is a specification.

My invention relates more particularly to improvements upon What iscommonly known as the Burroughs adding-machine, illustrated anddescribed in various Letters Patent of the United States granted toilliam S. Burroughs, of which it will suilice to refer to Nos. 504,963and 565,078, dated September 12, 1893; but it is applicable in itsessential features to other addingma chines of a similar character orintended for asirnilar urpose.

In mac ines of this character it is essential that at the beginning ofoperations the machine shall be clear'i. a, that the addingwheels shallhave nothing added upon them and shall stand at zero or initialposition, so that when a list of individual items is printed and addedand the machine then operated to print the total of such list the properamount of such total will be printed and not have in cluded in it anyamount standing upon the ad d in g-wheels at the beginning ofoperations. In the ordinary use of machines of this char acter theprintin of a total clears the machine or returns the adding wheels tozero or initial position, and it is therefore the practice at thebeginning of operations to operate the machine in the manner to print atotal in order to insure that the machine is clear be fore heginnin theprinting and addition of the indlvidua items to be listed. in thesemachines as heretofore constructed if the machine is operated in amanner to print a total when the adding-wheels are already at zero orinitial .osition nothing will be printed upon the s set of paper, andthere will, therefore, be nothing u on such paper to indicate whether ornot t e machine was cleared at the beginning of operations.

The object of my invention 1s to provide means for the rintmg of acharacter or characters for indlcating the fact that the machine hasbeen cleared, so that if such character should appear at the head of acolumn 'or list of items or amounts the operator is when the listing ofsuch items was begun. The character or characters may be any desi nationsuch as a cipher or ciphers, and in the present instance I have adoptedthe latter as the indicating character or characters, for the reasonthat I am thereb enabled without providing an extra type-p ate or thelike to utilize the regular rintmg mechanism of the machine, each of Wose levers or typearms are provided with type bearing the dig its 1 to 9and also 0. In the pres ent instance the means for so printing theindicating character or characters are under the control of the operatorthrough the medium, as shown, of a special key and of the adjustingmeans for the clearin mechanism of the machine, with the resu t thatsuch last-named means not only adjusts the parts for a clearingoperation of the machine, but by the same adjustment provides for acharactor or characters being printed to indicate the fact that themachine has been cleared. In the present instance the arrangement issuch that the printing mechanism associated with all of the type-arms isactuated to so indicate that the machine has been cleared, with theresult that a horizontal row oi oiphers is printed in the clearingoperation of the machine. However, this is not essential and the numberof clear characters may be fvaried considerably. Furthermore, the in"vention is not limited to the employment of the cipher type of theregular type-arms for this urpose, but other 'instrumentalities may eemployed to record the clear condition of the machine.

In the drawings, Figure 1 is a plan view of a Burroughs adding-machineembodying my improvements, a part of the machine-case being broken awayto expose the type plates and levers Fig, 2, a section taken on the line2 2 of Fig. 1 looking in the direction of the arrow; Fig. 3, a detailview of the pevvls and latches which trip the type-hammers and of theadditional pawl and latch provided by me, and Fig. 4 an example ofprinting done by the machine.

Inasmuch as the Burroughs adding-machine is not only Well known, butalso dethereby inform ed that the machine was clear ISO scribed in theprior Letters Patent aforesaid, and as my improvements comprise anattachment thereto for the purposes explained, have herein shown onlythose parts of i'nechanisms of such machine which are directly concernedor associated with the oper ation of my improvements.

The machine herein shown is of the multiple-key-bank type having akeyboard provided with a plurality of rows of keys 22], extending fromfront to rear of the machine, the nine keys in each row representing thenine digits and the respective rows representing different denominationsincreasing from right to left.

The plurality of levers B corresponding in their number with the rows ofkeys are hung upon a rock-shaft 600, Fig. 2, and are each provided witha downwardly and forwardly extending arm 611, operatively connected witha gear-toothed rack 610, whose movements are controlled and determinedby the rods 270, operated and set by the keys 221. Therearwardly-extending and sector-shaped arms 611 of the levers carry attheir rear ends the usual typeplates 618, whose type are forced againstthe paper arranged on the platen or paper-roller 619 by the action ofthe strikers or hammers 715 when released or tripped in the wellknownway. The strikers are fulcrumed near their lower ends upon a rod 701 andprovided with curved slots 10, in which travel actuating-studs 741,carried by the curved levers 716, fulcrumed on a rod 702. The upper endsof the levers 716,which carry the studs 741, are rearwardlyspringpressed, but restrained against such spring tension. by theengagement of their upper ends by latches 717, fulcruined upon the rod700. These latches are adapted to be tripped by the tripping-pawls 718,hung 011 a rod 704,which is supported between the upper ends of parallelside arms 711, secured at their lower ends to a rock-shaft 703. Theselatches and pawls are precisely the same in operation as thoseillustrated in Fig. 3 of said Burroughs patent, No. 505,078, and areidentically the same in construction as the extra latch and awl markedherein 717 and 718*, respective y, and forming part of my attachmenthereinafter described. and which in Fig. 2 of the present drawings hidethe other latches and pawls, the latter, however, ape pearing in Fig. 3.

The rock-shaft 703 and consequently the associated parts described areoperated in the well-known manner by the operating-handle 367, at theend of whose forward movement the arms 711 and rod 7 04 are rockedforward, with the result that the rearward ends of the tripping-pawls(except the one or more corresponding to any particular row or rows ofkeys operated or set) will be rocked upward by contact of their forwardends against the sloping shoulders 611 of the non-operated levers B, sothat such particular pawls will not engage the shoulders on the upperedge of their respective latches, but will pass thereabove. llowever,with respect to the operated levers B the pawls corresponding therewithwill not be rocked because of the removal of the interfering shoulders61 1", with. the result that such particular pawls will engage theshoulders on the edges of their respective latches and rock the latterin such manner as to release their levers 716, whose springs 780 willnow throw such levers rearwardly and. thereby throw their strikers 715against the particular type-plates which are at that time positioned. inline between them and the platen-roller 619.

In the Burroughs adding-machine as manufactured and as illustrated,particularly in Burroughs patent, No. 505,078, provision is made fortripping the latches 718 successively from left to rigl1tthat is, fromthe higher to the lower denominations-so that the machine will be causedto print a series of ciphers to the right of any digit, except, ofcourse, those in the first row on the righthand side. To this end thelower forward. end of each latch (with the exception of the outermostone on the right) has a tail or lug d, Fig. 3, projecting in the path ofmovement of the heel of its next adjacent latch on the right, so thatthe trip ing of one latch causes a tripping of all 0 them successively,the first character printed being a digit corresponding in value to thatrepresented by the particular digit-key operated and the remainingcharacters following successively to the right and of decreasingdenomination being all ciphers.

Each lever B is held in the normal position (shown in Fig. 2) by a latch415, controlled by the corres onding rows of keys in the key board. of te machine, and when any key in any row is depressed the latch of thecorresponding lever is tripped and the front end of the lever and therack 610, carried by it, are released, so that they may (later) swingdownward until arrested by a stop projected into the path of one of themoving parts by the operated key. The levers B do not move immediatelyupon the tripping of their latches by the operated keys, but only uponthe subsequent movement of the operatmghandle 367, Fig. 1. This handleis secured upon the projecting right-hand end of a stub rock-shaft 367,journaled in the right-hand side of the framework of the machine. Thisrock-shaft is connected with the rockshaft 600 by a train of mechanismnot necessary to be here illustrated or described, whereby when theshaft 367 is rocked by pulling forward the o crating-handle 367 theshaft 600 will be roc ed in the same direction. Fast upon the rock-shaft600, at opposite sides of the machine, Fig. 2, are two downwardly andforwardly extending levers 613, which are LII connected beneath thefront ends of the levers 611 by a cross-bar 617, whose opposite endsextend upward along the sides of the outside levers 611. The operatinghandie and parts moved by it are yieidingly heid in and returned tonormal osition by suitable sprin s, so that when t e operating-handle ispu ed forward the frame com osed of levers 513 and cross-bar 617 wil heswung downward and rearward, and when the operating handle is releasedsaid frame will he swung forward and upward again to normal osition.This frame constitutes the restormg or resetting frame for the levers13, its downward and rearward movement at the operation of the handlepermitting such levers B as have been released by the trip ing of theirlatches to swin downward unti arrested by the stops of t e operatedkeys, as heretofore explained, and the return forward and upwardmovement of the frame serving to restore such levers to normal positionupon the release and return of the operatinghandle.

If the racks 610 of the levers B remained in mesh with the pinions 916of the addingwheels during the downward movement of the racks, at theforward movement of the opprating-handle the pinions and addingw eelswould be turned distances corresponding to the values of the operatedkeys. In the present instance, however, the pinions 916 are swungforward out of gear with the racks 610 at the forward .movement of theoperating-handle and downward-movement of the released racks, sothatthey are not turned by the racks during the downward movement of thelatter; but at the return upward movement of the parts the pinions areswung rearward into gear with the racks and turned by the latterdistances corresponding to the previous downward movement of the racks.This is accomplished by mounting the supporting-shaft 955 of the pinions916 in a swmgindg frame composed of two side arms 0, locate at oppositesides of the machine and fast u on the opposite sides of a rock-shaft900. he up er end of one of these arms C is bifurcate as shown in Fig.2, and cooperates with a etc 205, which limits the forward and backwarmovement of the rockin frame carryin the inions. This rocking ame isoperate for t e purpose mentioned in the followin manner and y thefollowing means: Pivots ly supported upon a stud 941, projeetin inwardfrom the lefthand-side frame of t e machine, is a" three-armed lever913, whose vertically-dc pending arm has pivoted to its lower end therear end of a forwardly-extending arm 914, which is supported near itsforward end by a long link 911, depending from a stud upon the front endof a bell-crank 227, fulcrumed upon the framework of the machine at 204and having at its forward end an upwardlyextendi stem carry-in a fin eriece 265. This heil crank 227 and its stein a rid fingerbutton 265constitute the total-key of the machine, which is yieldingly held in andreturned to its normal osition, Fig. 2, by

springs acting upon ot er parts of the mait and not necessary Itsuffices for pres- 0 'ie connected with to be referred to here.

ent urposes to say that the upper end of V the ink 911 is supported bythe key or hellcrank 22? and that the lower end of the link is pivotedto and supports the forward end of the arm 914. At its front end thisarm 914 is divided into two diverging arms 914 and 914*, the former ofwhich extends upward immediately adjacent the side arm (1' of therocking frame carrying the train of pinions and is provided with a notchengagmg a stud 958 upon said side arm. Under this arrangement of partsit will be understood that if the arm 914 be swun bodily forward byforward movement of t e lower end of the vertical arm of the lever 913and lower end of the link 911 it will force forward the rocking framecarrying-the pinions and disengage them from the racks 610. Thismovement of the parts is accomplished at the forward movement of theoperating-handie by the following means:

Journaled in the lower middle part of the machine is a rock-shaft 800,connected with the rook-shaft .367, which carries the operating-h'andiein such manner that the forward movement of the handle rocks the shaft800 haekward. Fast upon the shaft 800 is a three-armed lever 813, whoseupwardly and forwardly extending arm 813 carries a piv oted'wiper blockor plate-S21, adapted to cooperate with studs 963 and Q81 upon thebackwardly and forwardly extending arms of the threearmed lever 913. Acontractile spring 883, connected by a rod or wire to the lower end ofthe pivoted plate 821', tends to swing said plate mto-alinement with thelevar-arm 813 uponiwhich the plate is pivoted and in the osition of theparts shown in Fig. 2 holds t e upper end of said plate against the rearside of the stud 961. When the operating-handle is ulled forward and theshaft 800 thereby roc ed in the direction of the arrow, theupward andrearward move 7 ment of theiever-arrn813 will engage one of theshoulders of the pivoted plate 821 with the stud 961 of the three-armedlever 913, thereby forcing upward the forward arm of said lever and swming forward its depending vertical arm, w ich latter will force forweirdthe am 914 and cause its upwardly and forwardly extending front arm 914,engaging the stud 958,'to swing forward the rocking frame C, carryingthe pinions 916 and disengage the latter from the racks 610, so that theracks may swing downward without turningthe pinions.

The operations thus described due to the forward movement of theoperating-handle will have swung the lever-arm 813 and its ivoted plate821 rearward into proximity with the stud 961 on the rearwardlyprojecting arm of the lever 913, and at the end of the forward movement of theoperating-handle the pivoted plate 821 will stand in substantially thesame relation to the stud 961 that it occupies in respect to the stud961 in Fig. 2, its upper end bea ring against the forward side of thestud and the plate itself being rocked upon the lever-arm 813 to a position opposite that occupied by it in Fig. 2. At the return or backwardmovement of the o crating-handle the rock-shaft 800 will re rockedforward to normal position, and as the lever-arm 81.3 swings forward therear shoulder upon the pivoted plate 821 will engage the stud 961 of thelever 913 and force the rcarwardly-projecting arm of said lever upward,thereby swinging its vertieallydepending arm rearward and drawing thearm 914 backward to normal position, and in this backward movement thearm 914 will carry the rocking frame C with it, owing to the engagementof the notched end of the arm 914 with the stud 958 upon the frame,thereby rengaging the pinions 916 with the racks 610 at the beginning ofthe return movement of the operatinghandle, so that as the levers 611,carrying the racks, are returned to normal position by therestoring-frame 613 617 the pinions and adding-wheels will be turneddistances corresponding to the previous downward movements of therespective racks.

It will be understood that at the end of the forward movement of theoperating-handle and of the downward movements of the respective rackswhich have been released by the operations of the keys in the rowscorres onding to them the type-plates carried by the rear ends of thelevers B will have been swung upward into positions to present at theprinting-line immediately in front of the platen 619 the respectivetypes corresponding to the values of the operated keys, and while theparts are in such position at the end of the forward movement of theoperatinghandle those types are forced rearward against the platen bymeans of strikers or hammers hereinafter described to effect theprinting of the amount represented by the operated keys, an inked ribbonbeing passed between the types and the paper upon the platen-roll.

Under the operation above described merely the amount of the individualitem represented by the operated keys will be printed upon the st rip orsheet of paper, and it will be next in order to explain how the total ofall of the amounts or items accumulated upon the adding-wheels may atany time be printed. it will be understood that if the pinions of theadding whcels were allowed to remain in mesh with the racks 610 duringthe downward movement of the latter the pinions would be turned backwardby the downward movement of the racks. The pinions are free to turnbackward upon their shaft 955 to but not beyond zero position. If,therefore, any rack be allowed to swing downward while in mesh with itspinion, it will turn such pinion backward until the pinion reaches 'zeroposition, whereupon the arresting of the pinion will arrest the movementof the rack. Thus if the pinion and its adding-wheel be standing at 9 itcan turn backward ninetenths of a revolution, and the rack engaged withit can move downward a corresponding distance. If it be standing at 5,it can move backward five-tenths of a revolution, and the rack acorresponding distance, and so on, with the result that if all of theracks be released and the operating-handle be drawn forward while thepinions are permitted to remain in mesh with the racks each pinion willbe turned backward the exact distance which it has been moved forwardfrom zero position and the racks will all be permitted to move downwardcorresponding distances, and this downward movement of the racks willcause corresponding upward movements of the type-plates 618, carried bthe rear end of the levers B, so that there wi 1 be brought to theprinting-line the types corres ending to the numbers which have beendisp ayed upon the adding-wheels. In other words, the totals which havebeen displayed upon the addingwheels will, by the return of those wheelsto zero osition, be transferred toand presented by t e types at theprinting-line at the rear end of the machine, so that by then forcingsaid tyfpes rearward against the platen the total 0 all the itemspreviously added upon the adding-wheels may be printed upon the strip orsheet of paper. The pinions are left in mesh with the racks whenever itis thus desired to print a total by throwing out of 0perative positionthe arm 914 whose forward movement disengages the pinions from the racksin the manner heretofore explained. This is accom lished by depressingthe total-key 265, w 'ch, through the medium of the link 911, swings thefront end of arm 914 downward and disengages its member 91 1 from thestud 958 upon the pinion-carrying frame C, so that when theoperating-handle is then pulled forward the arm 914 will move idlyforward and leave the frame 0 in its normal position, with the pinions916 in engagement with the racks 610, the depression of the total-keyhaving, through the medium of the links 216 and cross-rod 209,displacethe latches 415, and thus released the racks 610.

If the pinions were permitted to remain in mesh with the racks duringthe return upward movement of the latter at the release and backwardmovement of the operatinghandle, they would be turned forward again tothe respective positions which they occupied prior to the operation ofprinting the total in the manner described, so that at the end of theoperation there would remain accumulated u on the adding-wheels theamount which lad previously been added upon them, and succeeding itemsor amounts would thereafter be added to this aggregate of the precedingitems. This is permitted when it is desired to merely print what istermed a subtotal and not clearthe machine; but for the purpose ofprinting what may be terrnetl a grand total and clearing the machinemeans are provife'l for swinging the pinions of the adding-wheels out ofengagement'with the racks prior to the return upward movement of thelatter, so that the pinions and adding-wheels will be left in zeroposition at the end of the operation of the machine, and the latter bethereby cleared. This is accomplished by means of the hooked lower endof the depending member 914* of the arm 914, which hooked end is adaptedto cooperate with a stud 958 upon the ower end of the side arm C of thepinion-carrying frame. The depression of the total-key 265 swings thishooked end of the arm 914 downward into proximity to the stud 958, andwhen the arm 914 is moved forward at the forward movement of the ocrating-handle the hook catches over t e stud 95S, and when the arm 914is then drawn rearward again at the of the rearward movement of theoperatinghandle, as heretofore explained, the engage- .ment of the hookwith the stud pulls the lower end of the rocking frame 0 rearward andswings its upper en forward and disenages the pinions from the racks, sothat the latter may move upward to normal position without turning thepinions.

The construction and operation, so far exlained, in general terms, arethat of the welllinown Burroughs machine, and my invention which isshown embodied therein will now be described. As hereinbefore stated,the purpose of my invention is to provide means whereby the machine atthe will of the operator shall rint a character or characters indicatint e fact that the machine has been cleared, in the present instance suchindication bein a horizontal row of characters composed w holly of cihersa result which could not be attained y the machine when constructedas hereinhefore described. To this end I provide an additional latch andpawl, (marked 717 and 7.18, respectively) similar to the latches 717 andpawls E8 and arranged on the extreme left-hand side of the set or seriesof such latches and pawl's, as clearly indicated in Fig. 1. It will nowhe understood that when this latch 717*, which is not associated withany lever B, striker, or type-plate, but which is provided with aprojecting lug d in the same manner and for the same purpose as thelatches 718, is tripped by its pawl 718 all of the latches 717 wil esuccessively tripped, with the result that the entire set of the Vtype-plates, including, of course, in the present instance, the onecorresponding to the row of keys of the highest denomination, will becaused to print oi hers in a horizontal row. For the purpose 0 trippingthis additional latch 717 at the will of the o orator, and therebytripping the ordinary atches of the machine, a special key E andintermediate connections are provided, such connections in the presentinstance comrising a substantially vertical lever or arm a, secured atits u per end to a rock-shaft C, journaled in'the Etc 210, Fig. 2. Thelower end of this arm is provided with an inclined edge a, corres endingwith the sloping shoulders 611* of tlie levers B and adaptedto give thesame action to its pawl 7'18 as given by the said shoulder 611 to theirrespective paivlsthat is, normall a roclrirn movement to elevate therearwar ends of the pawls of the non=operated levers B sniliciently tocause them to clear the shoulders on the upper edges of the latches inthe movement of ,the pawis bodily forward. The forward movement of thearm 0, which is springpressed in that direction by spring 0, 15 kmltedby a branch arm 0', arranged to rest against the main rock-shaft 600.

As shown in Fig. 2, the rock-shaft C has a second depending arm c whoselower end is pivotally connected to the rearward end of a substantiallyhorizontal link or bar D. This link is horizontally slotted intermediateof its length to receive the pin d at the lower end of the stem 3 of thespecial key E, whose depression, as shown in Fig. 2, a ainst the tensionof the spring a brings the ink D in position so that its shoulderedfront end may be contacted by the pin 227 a when said key is depressed,as shown in Fig. 2, with the resuit that the link Dis thrust rearwardlyand the edge e of the arm C raised to such extent as to he no longercontrolling as to its pawl 718, but swung to an inoperative positionwith respect thereto. The pawl 718 u on its forward movement at the endof the on ward movement of the operating-handle 367 will consequentl enage its latch '71? and thereby trip all t 6 0t er latches successivelyto cause their strikers to operate and all the type-plates of themachine to implrint their ci hers on the paper carried by t e platenroler, with the result that in the present instance a horizontal row ofcharacters, compssedwholly of ciphers and rspresentin all thedenominations on the keyboard will be printed.

The special key E is adapted to be locked to the he heard in depressedcondition,so as to hold t e bar D pro erly positioned for its actuationby the tote -key, and to this end such key is provided on its rearwardedge with a notch e to en age the keyboard in the usual manner. In t epresent instance, and as shown in Fig. 2, the stem 6 of the s ecial keyhas a pin-and-slot connection wit the plate 210, to which end thekey-stem is slotted to receive a pin or stud e, projecting from saidplate and on which, as a fulcrum, the key-stem is rocked, as hereinafterexplained. The forward end of the bar D is provided with a shoulder orprojection D in order to )rcvent such bar from being swung upwardly ythe bell-crank of the total-key and the special key E from being therebyrocked at its lower end in such manner as to be disengaged from thekeyboard without the intended longitudinal movement of such bar. Byreason of the pin-and-slot connection between the key-stem e and link orbar D the latter is permitted to move longn'tudinally a certain distancebefore rocking the lower end of the stem of the s ccial key on the pin 0as a fulcrum, with t 1e result that the arm C is first rocked toinoperative position as respects its tripping-paw 718 before the secialkey is automatically disengaged from t e keyboard by the furthertravel or movement of such link or bar. Thus the special key may be setby the operator and be automatically released from its locking meansduring the last stage of the downward movement of the total-key and inposition to be restored to normal position upon the upward movement orrestoration of such total-key, it being understood that the latter isheld down during the printing operation.

In Fig. 2 of the drawings the key E is shown depressed with theassociated parts in position to be operated by the total key 265 for thepurpose of making the described indication of the fact that the machinehas been cleared. The key E in normal condition is held upwardly by thes rin e", and likewise the forward end of the l ink is held out of thepath of travel of thi pin or stud 227" of the bell-crank, at which timethe total-key 265 performs its usual and wellknown functions withoutactuating said link.

The mechanism or attachment which I have described provides a simple andeflicient means under the control of the operator for indicating to himwhether the machine has been cleared when he began the printing andlisting of individual items in a column, with the result that any totalor footing at the bottom of that column represents the total of thoseparticular items so listed below the horizontal row of ciphers. However,it is to be understood that the car g out of the invention might bemodifie by printing less than the entire row of ciphers and that othermeans might be employed for recording a clear condition of the machinethan those here shown without departing from the spirit and scope of thepresent invention.

I claim 1. In an adding-machine, the combination of printing and addingmechanism and means for clearing the machine and by the same operationprinting a character to indicate the fact that the machine has beencleared; substantially as described.

2. In an addin -machine, the combination of printing and a dingmechanism and means for clearing the machine and by the same operationprinting a cipher to indicate the fact that the machine has been"cleared; substantially as described.

3. In an adding-machine, the combination of adding, printing andclearing mechan isms, and key-controlled means cooperating with theprinting mechanism and actuated by the clearing mechanism for printing acipher when the clearing mechanism is operated to thereby indicate thefact that the machine has been cleared substantially as described.

4. In an adding-machine, the combination of addin printing and clearingmechanisms, an means actuated by the clearin mechanism in the clearingoperation or causing the printing mechanism to rint a plurality of cihers when the mac e is cleared to t ereby indicate the fact that themachine has been cleared substantially as described.

5. In an adding-machine, the combination of addingglprinting andclearing mechanisms, the printing mechanism being normally arranged notto print when the machine is clear, and means cooperating with theprinting mechanism for causing the same to print a character when themachine is clear and to thereby indicate the fact that the machine hasbeen cleared substantially as described.

6. In an adding-machine, the combination of adding, printing andclearing mechanisms, the printing mechanism being normally arranged notto print when the machine is "clear, and means under the control of theoperator for causing the rinting mechanism to print a character w en themachine is in said condition and to thereby indicate that fact;substantially as described.

7. In an adding-machine, the combination of adding, clearing andprinting mechanisms, the printing mechanism being normally arranged notto print When the machine is clear and key-controlled means cooperatingwith the printing mechanism to cause the same to print a character whenthe machine is in clear condition and to thereby indicate that fact;substant ally as described.

8. In an adding-machine, the combination of adding, printing and"clearing mechanisms, the printing mechanism being normally arranged notto print when the ma chine is clear, and means cooperating with theprinting mechanism for causing the same the machine is in said conditionand to there by indicate that fact; substantially-as described.

10. In an adding-machine, the combination of adding, printing andclearing mechanisms, the printing mechanism being normally arranged notto print when the machine is clear, and means under the con trol of theoperator for causing the printing mechanism to print a plurality ofciphers when the machine is clear to thereby indicate that fact;substantially as described.

11. In an adding-machine of the multiplekey-bank t e, the combination ofadding. printing an clearin mechanisms, and means for printing a ccreator to indicate the fact that the machine has been clearedsubstantially as described.

32. In an adding-machine of the multiplekcy-bank ty e, the combinationof adding, printing an clcarin mechanisms, and means cooperating withthe prmting mechanism for causing the same to print a character toindicate the fact that the machine has been cleared substantially asdescribed.

13. In an adding-machine of the multiple key-bank ty e, the combinationof adding, printing an clearing mechanisms and means cooperating withthe printing and clearing mechanisms for causing the same to permit avlurality of ciphers to indicate the fact that t e machine'has beencleared substantially as described.

14-. In an adding-machine. the OOIHlHfitte tion of adding, printing andclearin mech? anisms, means arranged to cause t 1e printing mechanism toprint a character to indicatethe fact that the machine has been clearedand a special key cooperating with said means and arranged to move thesame to a osition to be operated by the cleans mec .anism in the clearinoperation of is machine; substantially as ascribed 15. In anadding-machine, the combination of adding, printing and clearingmechanisms, means arranged to cause the printing mechanism to print acharacter to indicate the fact that the machine has been cleared, a secial key cooperating with said means an adapted to move the same intooperative relation with the clearing mechanism whereby said means are cerated and the indicatin character cause to be printed in the cearingoperation of the machine and means for locking the key in operatedposition, said clearing mechanism being arranged to unlock the keyduring said clearing operation; substantially as described.

7 16. In an adding-machine, the combination of printin and addingmechanism, mechanism for clearing the machine. said printing mechanismhaving a series of movable type carriers. a corresponding series ofstrikers or hammers which are inoperative when the machine isoperatcdduring clear condition, and means under the control of the operator forcausing the hammers to opcrate and thereby print ciphers to indicate thefact that the machine is clear; substantially as described.

17. In an addin -machine, the combinstion of rinting and addingmechanism, and means or clearing the machine and by the same 0 orationprinting a horizontal row of similar characters at the head of a columnof listed items to indicate that the machine has been cleared;substantially as described.

18-. In an addin -machine, the combination of rinting and addingmechanism, and means or clearing the machine and by the same 0 oration.rintin a series of ciphers at tie head e f a. co norm of listed items toindicate that the machine has been cleared f substantially as described.

19. In an adding-machine, the combination of printing and addingmechanism, means for adjustin the same for a clean iing operation, and aspecial key cooperatsaid printing mechanism to print a horizonta row ofcharacters composed wholly of ciphers to indicate that the machine hasbeen. cleared substantially as described.

21. In an adding-machine, the combination of printing and addingmechanism, means for clearing? the machine, said prmtm mechanism beingcontrolled by a series 0% latches, and means for tripping the latchesand thereby causing the printin mechanism to print a horizontal row 0characters composed wholly of ciphers; enhstantially as described.

22. In an adding-machine, the combination of printing and addingmechanism, means for clearing the machine, said printing mechanismhaving a series of movable type-carriers, a corresponding series ofspring-pressed strikers or hammers for forc ing the type of the carriersagainst the platen,

a series or latches for controlling said strikers,

and n'ieans for tripping all of said latches to cause the type to printa horizontal row of ciphers; substantially as described.

23. In an adding-machine, the combination of printing and addingmechanism, means for clearing the machine, said printing mechanismhaving a series of movable typecarricrs, a corresponding series ofspring-pressed strikers or hammers for forcing the type of the carriersagainst the platen, a series of latches for controlling said strikers,and manually-operated means for tripping said latehesto cause the typeto print a horizontal row of characters composed wholly of ciphers;substantially as described.

24. In an adding-machine, the combination of printing and addingmechanism, means for clearin the machine, said printing mechanism havinga series of movable type-carriers, a corresponding series ofspring-pressed strikers or hammers for forcing the type of the carriersa ainst the platen, a series of latches for control ing said strikers,and adapted to trip each other successively from left to right, andmeans for tripping the outermost latch on the left Without setting upany of the ty e-carriers, Whereb a horizontal row of cip iers will beprinte to indicate that the machine has been cleared; substantially asdescribed.

25. In an adding-machine, the combination of printing and addingmechanism, means for clearin the machine, said printing mechanism avinga series of movable type-carriers, a corresponding series ofspring-pressed strikers or hammers for forcing the type of the carriersa ainst the platen, a series of latches for control ling said strikers,and a separate latch tri ped at the will of the operator and positionedat the left-hand side of the outermost one of said series of latches,said separate latch bei arranged to trip such outermost latch an therebycause the remaining ones t0 be successively trip ed, whereby ahorizontal row of ci hers wi 1 be printed to indicate that the mac inehas been cleared, substantially as described.

26. In an adding-machine, the combina tion of printing and addingmechanism, means for clearing the machine, said printing mechanism avinga series of movable type-earriers, a corresponding series ofspring-pressed strikers or hammers for forcing the t e of the carriers aainst the platen, a series of atches for control ing said strikers, anda key-controlled latch positioned adjacent the outermost latch on theleft-hand side of said series of latches and arranged to trip saidoutermost latch without the operation of any of the type-carriers,thereby causing all of said series of latches to be successively tri pedand a row of ciphers to be printed to indicate that the machinehas beencleared substantially as described.

27. In an adding-machine, the combination of printing and addingmechanism, means for clearin the machine, said printing mechanism havinga series of movable type-carriers, a corresponding series ofspring-pressed strikers or hammers for forcing the type of the carriersa ainst the platen, a series of latches for control ling said strikers,a total-key controlling the operation of the printing mechanism to printa total, and tripping device actuated by the total-key for tripping saidseries of latches and to thereby cause a row of ciphers to be printed toindicate that the machine has been cleared substantially as described.

28. In an addingmiacliine, the combina tion of printing and addingmechanism, means for clearing the machine, said printing mechanismhaving a series of movable type-carriers, a corresponding series ofspring-pressed strikers or hammers for forc ing the type of the carriersa ainst the platen, a series of latches for controlling said strikers, atotal-key controlling the operation of the printing mechanism to print atotal, and a separate latch actuated by the total-key and positionedadjacent the outermost latch on the left-hand side of said series oflatches, said separate latch bei arranged to cause a tripping of saidseries 0 latches and a conseuent printin of a row of ciphers to indicatet at the mac line has been cleared substantially as described.

. 29. Inan adding-machine, the combination of printing and addingmechanism, means for clearin the machine, said printing mechanismIiaving a series of movable type-carriers, a corresponding series ofspring-pressed strikers or hammers for forcing the ty 0 of the carriersa ainst the platen, a series of atches for control ing said strikers, atotal-key controlling the operation of the printing mechanism to print atotal, a special or separate latch arranged to cooperate with saidseries of latches, and a tripping device for said separate latchnormally mo erative but moved to operative position by t e operation ofthe totalkey; substantially as described.

30. In an adding-machine, the combination of printing and addingmechanism, means for clearin the machine, said printing mechanism ravinga.series of movable type-carriers, a corresponding series ofspring-pressed strikers or hammers for forcing the type of the carriersagainst the platen, a series of latches 717 normally restraining saidstrikers from movement, and having means for causing their successivetripping from left to right after the tripping of one of them by itstripping-pawl, tripping-p awls 7 18 for tri ping said latches, aseparate latch arrange adjacent the outermost latch on the left-handside of such series of latches and itself adapted, when tripped, to tripsaid outermost latch of the series, a special and normally inoperativetrip for said separate latch, and a total-key and connections forrenderin said special trip operative when the tota -key is operated;substantially as de- W scribed.

31. In an adding-machine, the combine tion of rinting andaddingmechanism, means for c caring" the machine, said pnnting mechanismhaving a series of movable type carriers, a corresponding series ofspringpressed strikers or hammers for forcing the type of the carriersagainst the platen, a se ries of latches 717 normally restraining said 7strikers from movement and having means for causing their successivetripping from left to right after the tripping of one oi their by itstripping-pawl, tripping-pea ls 713 for tripping said latches, a separatelatch ar" ranged adjacent the outermost latch on the left-hand side ofsuch series of latches and itself adapted, when tripped, to trip saidoutermost latch of the series, a s ecial and normally inoperative tripfor sai separate latch, a total-key and connections for rendering saidtrip operative when the totalkey is operated, and aseparate key forbringing said s 'ecial trip into operative relation with thetotal-keymechanism; substan tially as described. :vv

32. In an adding-machine, the combination of printing and addingmechanism, means for clearin .the machine, said printing mechanism avinga series of movable type-carriers, a corresponding series ofspring-pressed strikers or'hammers for forcing the t e of the carriers.against theplaten, a series o latches 717 normally restraining saidstrikers from fm0vement and having means for causing their successivetrippin from left to right after the tripping oi one 0 them by itstripping-pawl, tripping-pawls 7 18 for tripping said latches, a'separatelatch arranged ad'acent the outermost latch on the left-hen side of suchseries of latches and itself adapted, when tripped, to tri saidoutermost latch of the'series, a s ecia l and. normally inoperative tripfor sai se arate latch, a pivotedarrn G cooperating Wltlhlih said tri tonormally keep thesame in inoperai tive re ation with respect to saidseparate latch, a "total-key and connections, and

means under the control of the operator tor operatively connecting thearm U with the total-key mechanism for swinging said arm to inoperativeposition; substantially as described. r r 7 33. in an adding-machine,the combine tion of printing and adding mechanism, means for clearingthe machine, said printing mechanism having a series of movable typecarriers, a corresponding series of spring-pressed strikers or hammersfor forcing the type of the carriers against the platen,

a series of latches 717 normally restraining said strikers from movementand having means for causing their successive tripping from left toright after the tripping of one of them by its tripping-pawl,trippingawls 718 for trip ing said latches, a separate atch arranged a'acent the outermost latch on the left-hand side of such series oflatches and itself adapted, when tripped, to trip said outermost latchof the series, a s ecial and normally inoperative trip for sai separatelatch, a pivoted arm 0 cooperating with the said trip to normally keepthe same in inoperative relation with respect to said separate latch, stotahlre and connections, and a key-controlled'lin 1) arranged to bemoved into the path of movement of the totalkey connections and totransmit such motion "to said arm 0, whereby the latter is swung toinoperative position and its trip caused to release all the latches andtheir hammers when the machine is operated; substantially as described.

34. In an adding-machine, the combination of printing and addingmechanism, means for clearin the machine, said printing mechanism ravinga series of movable type-carriers, a corresponding series ofspring-pressed strikers or hammers for forcing the type of the carriersagainst the platen, a series of latches 717 normally restraining saidstrikers from movement and having means for causing their successivetripping from left to right after the tripping of one of them by itstripping-pawl, tripping-pawls 718 for trip said latches, a separatelatch arranged a acent the outermost latch on the left-hand side of suchseries of latches and itself adapted, when tripped, to trip saidoutermost latch of the series, a s ecial and normally inoperativetrip'for sai separate latch, a pivoted arm C cooperating with the saidtrip to normally keep the same in inop erative relation with res set tosaid separate lateh,a "total-key an connections, a rockshaft c to whichthe arm G is fastened, a second arm c fastened thereto, a link Dpivotally connected at one end to said arm c a special key E operativelyconnected with the link, and a total-key? having a bell-crank connection227 arranged to shift the link D when moved by its key into the path ofmovement of such bell-crank; substantially as described. r

35. In an "adding machine, the combination of printing and addingmechanism, means for clearing: the machine, said printing mechanismaving a series of movable type-carriers, a corresponding series ofspring-pressed strikers or hammers for forcingthe type of the carriersagainst the platen, a series of latches 717 normally restraining -saidstrikers from movement and having means for causing their successivetripping from left to right after the tripping of one of them by itstripping-pawl, trippingpawls iIO ' cooperating with t 718 for trip ingsaid latches, a se arate latch arranged a j aoent the outermost iatch onthe left-hand side of such series of latches and itself adapted, whentripped, to trip said outermost latch of the series, a s ecial andnormally inoperative trip for said separate latch, a pivoted arm 0cooperating with the said trip to normally keep the same in inoperativerelation with respect to said separate latch, a total-key andconnections, a rockshaft 0 to which the arm C is fastened, a second arma fastened thereto, a link D pivotally'connected at one end to said arm0, a special key E having a pin-and-slot connection with the link Dintermediate of the latters length, and a total-key having abellcrankconnection 227 arranged to shift such link longitudinally whenthe latter is moved by its key to cooperative relation therewith,whereby the arm 0 will be rocked to inoperative position and its trippermitted to engage and operate its latch, t ereby causing a tri ping ofthe series of latches associated wit the printing mechanism;substantially as described.

36. In an adding-machine, the combination of the levers B carrying te-plates 618 at their rear ends, s ring-presse strikers 715libtype-plates, a series of latches 717 corresponding in number with thestrikers and levers B and normally restraining said strikers frommovement, each of' said latches, except the outermost one on the ri ht,having lugs for tripping, when operated, the adjacent latch on its left,tripping-pawls 718 for trip ing the latches, a

special latch similar to t ose of the series of latches, a special pawlsimilar to those of the series of pawls and arranged adjacent theoutermost left-hand latch of said series of latches, a pivoted arm Chaving an inclined edge a normally in the path of movement of thespecial pawl to keep the latter, when moved in the operation of themachine, from en agement with its latch, and key-contrdlled connectionsfor shifting said arm to an inoperative position to allow said specialpawl to engage its latch and thereby trip all the latches to cause aprinting of a horizontal row of ciphers denoting that the machine iscleared substantially as described.

37. In an addingmachine, the combination of the levers B mounted on arock-shaft 600 and carrying type-plates 618 at their rear ends,springpressed strikers 715 cooperating with the type-plates a series oflatches 717 corresponding in number with the strikers and levers B andnormally restraining said strikers from movement, each of said latches,

except the outermost one on the right,

havi lugs for trippin when operated, the a jacent latch on its eft,tripping-pawls 718 for tripping the latches, a special latch similar tothose of the series of latches, a special pawl similar to those of theseries of pawls and arran ed adjacent the outermost left-hand latch 0said series of latches, a piv oted arm C having an inclined edge cnormally in the path of movement of the special pawl to keep the latter,when moved in the operation of the machine, from engagement with itslatch, said arm bein spring-pressed rearwardly and provided wit a brancharm a arran ed to contact said shaft 600 and thereby imit the movementof such arm, and key-controlled means for swinging said arm toinoperative position and permitting the special pawl to enga e itslatch, thereby causing a tripping o the entire series of latches andstrikers and a consequent printing of a horizontal row of ciphers todenote that the machine is cleared substantially as described.

38. In an adding-machine,the combination of the levers B carryingtype-plates 618 at their rear ends, springpressed strikers 715cooperating with the type-plates, a series of latches 717 correspondi innumber with the strikers and levers B an normally restraining saidstrikers from movement, each of said latches, except the outermost oneon the right, having lugs for trippin' ,when operated, the adjacentlatch on its left, trippingpawls 718 for tripping the latches, a speciallatch similar to those of the series of latches, a special pawl similarto those of the series of pawls and arranged adjacent the outermost lefthand latch of said series of latches, a pivoted arm C having an inclinededge 0 normall in the path of movement of the special paw to keep thelatter, when moved in the operation of the machine, from engagement withits latch, a total-key and its connections, a special key arranged to belocked to its depressed or downward position, and movable mechanismarranged intermediate the total-key and said arm C and controlled bysaid special key, said mechanism being actuated by the total-key whosefirst movement rocks the arm C to inoperative position and whosecontinued movement also auto matically releases the special key from itsdownwardlocked condition; substantiallyas described.

39. In an adding-machine, the combination of the levers B carrying te-plates 618 at their rear ends, spring-presse strikers 715 cooperatingwith the type-plates, a series of latches 717 corresponding in numberwith the strikers and levers B and normally restraining said strikersfrom movement, each of said latches, except the outermost one on theright, having lugs for tripping, when operated, the adjacent latch onits left, trippingpawls 718 for tripping the latches, a special latchsimilar to those of the series of latches, a special pawl similar tothose of the series of pawls and arranged ad'acent the outermostleft-hand latch of sai series of latches, a pivoted arm C having aninclined edge 0 normall in the path of movement of the special paw tokeep the latter, when moved in the operation of the machine, fromengagement with. its latch, a total-key and its connections, a specialkey, and a movable bar I) op erativel connected with said arm C andcontrolled li y the special key and adapted to be positioned therebyinto the path of movement of the total-key connections; substantially asdescribed.

40. In an adding-machine, the combination of the levers B carryingtype-plates 618 at their rear ends, spring-pressed strikers 715cooperating with the type-plates, a series of latches 717 correspondingin number with the strikers and levers B and normally restraining saidstrikers from movement, each of said latches, except the outermost oneon the right, having lugs for tripping, when operated, the adjacentlatch on its left, trippingpawls 718 for tri ping the latches, a specialatch similar to t 1086 of the series of latches, a special pawl similarto those of the series of awls and arranged adjacent the outermostoft-hand latch of said series of latches, a pivoted arm C having aninclined edge e nor= mall in the path of movement of the special paw tokeep the latter, when moved in the operation of the machine, fromengagement with'its latch, a total-key having a movable connect-ionprovided with a in 227, a special key arranged to be locks to itsdepressed or downward position, and a longitudinallysnovable bar D,operatively connected with the arm 0 and having a pin-and-slotconnection with the special key, said bar being controlled by thespecial key and adapted to be ositioned into the path of movement ofsaid pin 22? whereby such bar will first rock said arm C andsubsequently rock the special key to release the latter from its lockedcondition; substantially as described.

41. In an adding-machine, the combina tion of the levers B carryingtype-plates 618 at their rear ends, spring-pressed strikers 715coojixerating with the type-plates, a series of late es 717corresponding in number with the strikers and levers B and normallyrestraining said strikers from movement, each of said latches, exceptthe outermost one on the right, having lugs for tripping, when operated,the adjacent latchonits left, trippingpawls 718 for tri ping thelatches, a special latch similar to tliose of the series of latches, aspecial pawl similar to those of the series of awls and arrangedadjacent the outermost cit-hand latch of said series of latches, apivoted arm C having an inclined edge 0 normallv in the path of movementof the special pawl to kee the latter, when moved in the operation 0 themachine, from engagement with its latch, a total-key having a movahleconnection provided with a pin 227 a special key arranged to be lockedto its depressed or downward osition, and a longitudinally-movable bar 1operatively connected with the arm G and having a pin-and-slotconnection with the special key, said bar being controlled bv thespecial key and adapted to be ositioned into the path of movement ofsail pin 227 said bar D being provided with means for preventingdisplacement or swinging movement when engaged by the pin 22?, wherebysuch her will first rock said arm C and subsequently rock the specialkey to release the latter fromitslocked condition; substantially asdescribed.

42. In a machine of the character described, the combination withprinting and adding mechanism adjustable for clearing operations, ofmeans controlled by such adjustment for recording a clear condition ofthe machine.

43. In a machine of the character described, the combination with addingand listing means adjustable for clearing operations, of meanscontrolled by such adjustment for recording a clear condition of themachine prior to listing.

CHAS. N MCFARLAND.

Vlitnesses G. M. JARMAN, M. E. KULE'WATZ.

